Machine for the manufacture of glass articles



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//VVN7'0/? SYDNEY HUNT,

H A roe/var April 12, 1932. s. HUNT MACHINE FOR THE MANUFACTURE OF GLASSARTICLES Filed Sept. 5, 1927 Ms g v l atented 'Apr. 1 2, 1932' QNL'DEFD;STAT ESP A ENT crates SYDNEY HUNT, OF BIRMINGHAM, ENGLAND, ASSIGNOR TOJOHN WALKER & SONS LIMITED, OF LONDON,- ENGLAND, A BRITISH COMPANY.

MACHINE FOR THE MANUFAGTURE OF GLASS ARTICLES Applicationfiled September3, 1927, Serial No.

This invention relates to'machines for the manufacture of glass articlesand refers more particularlytothat type of such machines in' V which aparison-or equivalent mould is periodically brought into contact withmolten glass, contained in atank or pot, and in which a knife isprovidedadapted to be moved across the orifice of the parison mould *or the likein order to severthe trailing glass from the bottom of the mould.

With machines of this description it is nec-v essary to provide meansfor adjusting the position in which'the cutting takes place,

, both on account of the desirability'of being I able to use parison'moulds or the like of dif ferent lengths and in order to obtain greataccuracy in the cutting position of the knife.

The knife adapted for machines of the foregoing type is usually mountedat the bottom of a long vertical shaft rotatable in suitable bearings sothat by suitable mechanism. the cutting stroke can be effected at theproper time, and the object of the present invention is to provideimproved means for at justing the spindle vertically, even when themachine is operating and to enable the spin:

r shaft.

dle to be held in the adjusted position. The operating and locking meansare also so arranged that either a coarseadjustment or avery fineadjustment can be eifected,"andif necessary by the operator with the useof only one hand. 1 f

According tothe general principle of the invention, the knife. shaft isprovided with a 5 screw thread of suitable pitch, at some suitableportion of its length, preferably at. some distance from the heat, andin the neighbour hood of a bearer arm or the like carrying one of thebearings for the knife shaft.

Associated with the bearer arm isla nut, which is restrained fromlongitudinal move ment but which is free to rotate.

Through this nut screws-the beforementioned screwthreaded portion ofthe'knife By this means, when the nut is rotated the knife shaft ismoved upwards or downwards as the case may be.

The knife shaft carries adevice which is caused to rotate therewith andwhich device 217,442,:1nd it Great Britain June 15, 1927.

before mentioned nut so that when the shaft has been adjusted tothe-required position by the rotation of the nut; further relativemovement between the shaft and the nut can be prevented, by locking thedevice to the nut. I

Although the shaft and the nut are locked together, this does notprevent the knife shaft from being turned in the ordinary mannertoeffect the cutting stroke by any suitable means allowing for itslongitudinal move-,

ment.

clearly understood, it will now'be described with reference to theaccompanying drawings and as applied to a rotatable machine of usualcharacter furnished with parison' moulds adapted to be dippedperiodically into a tank containing molten glass.

In the drawings Fig. 1 is a fragmentary sectional eleva tion shewing theknife and the method of adjusting the knife shaft. I

Fig. 2 is a side elevation of'a portion of Fig. 3' is a sectional planon line 3-3 Fig. 2'

& shews to asma-ller scale a somewhat diagrammatic view illustrating themethod of disengaging the saddle piece from the nut.

Fig. 5 shews also to a "smaller scale, a similar viewto Fig. 1illustrating-a slightly clifferent form of arm carrying the knife shaftwork of the machine not shewn in the drawings, 1s an arm 10 for eachparison mould (not shewn). This arm 10 the outer end only of which isshewn, is of such length that r the knife 9 which iscarried therefromcan conveniently co-operate with" the bottom of the parison mould. p

At the end of this arm 10 is a bore 11 Tn order that the invention maybe more through which the knife shaft 12 passes. The

upper side of the arm 10 supports a ball thrust bearing 13 which ispartly located in a recess 14 coming at the under side of a nut member15. The nut15 is provided with acircumfer ential groove on the exteriorabove which is located a flange furnished with a number of projections16 to facilitate the manipulation of the nut, and at the top is furtherprovided with an upwardly extending flange 17 having a number of slotsor notches 18 at equiangular distances apart. The upper surface of thenut 15 is also provided with a circumferential recess 19 extending tothe bore. Attached to the bearer arm 10 is a bracket 21' one portion 22of which is adapted to enter the circumferential groovem2O on the outersurface of the nut 15 in order to hold the nut from longitudinalmovement whilst notpref venting it being rotated. The shaft 12 of theknife 9iis provided with a long! screw thread 23. of pitch.corresponding to that. of the nut 15, preferably of fine pitch. Thisportion of the knife shaft screws into the nut and the screwthreadedaportion23 is so located on the shaft that it bringsthe knifesubstantiallyinto thecregiontof the bottom of the parison mould.

Theshaft 12 is-formed'witha.feather way 24 and; a saddlepiece25 isfurnishedformed with a feather 26: adapted-to engage in the said featherway 24. The saddlerpiece is kept in position on theshaft 12b means of ametal strap 26a encircling: the said shaft the ends of which strap aresuitably attached to the saddle piece at 27, so that in this way thesaddle piece is caused to rotate w th the shaft but; it, is free toslide longitudinally thereon.

The saddlepiece 25 is provided with two lugs 28 betweenwhichispivotedadetent or catch 29 of suitable shape to engage notchesor slots18 in the top flange 17 of the nut 15 before referred to, and when soengaged the lower portion .30 of the saddle p ece 25 andzits strap ifdesired enter the before mentioned circumferential groove 19 at the topof the nut, the saddle piececontactinng with the nut by its weight only.

When it is required, for instance onchanging: moulds, toefiectcoarseadjustment, that is to move the knife 9 through a comparat" 1yconsiderable vertical distance, the detent or catch 29 of the saddlepiece 25 is d isene a god from the nut 15 as shewn inFig. 4:;and turnedupwards and out of the way, and then the nut 15 can be rotated as manytimes as .re-

quired to efi'ect-thiscoarse adjustment.

On the other hand when it is only required to effect a fine adjustment,the nut 15 is only turned through a small angular distance as forinstance that between two consecutive notches18, thus raising onloweringthe knife shaft 12 to avery slight extent.

After adjustment thedetent 29 is turned downand re-engaged in one of-thenotches, 18; thus preventing relative: rotative move-v ment between thenut 15 an d'the shaft 12.;

When the cutting stroke is to beetfected the knife shaft 12 isrotatedinany usual manner 1 than:

not shewn on the drawings, and the arrangement just described does notinterfere with this rotary motion as the saddle piece 25 moves with theshaft 12 and the detent 29 carried by the said saddle piececauses thenut 15 also to move with. the, shaft 12", the thrust bearing 13 on theunderside of the nut allowing for this movement.

It will be understood that although the in vention has been particularlydescribed with reference to a rotary machine provided with dippingparison moulds, it may be adapted where found desirable to other typesof machines in which it is necessary to cut off trailing glass.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the sameis to be performed, I declare thatWhat I claim is F?- 1. In a machine for the manufacture of glass,articles and of the type comprising a.

parison mould and a knife carried by a re tatable shaft, for cuttingofltrailing'glass from the bottom of the said. parison mould, means foradjusting theknife shaft vertically including a screw threaded portionon the shaft, a nut screwing onto the said portion and adapted to abutagainst a relatively-fixed portion in connection with the framework,means fixed to said framework and having engagement with said nut formaintaining the nut against mo ement a wayfrom the surface againstwhichit abuts but permitting rotation of said nut, relative to the framework,and means for preventing the nut from rotating on the shaft afteradjustment for the purposes set forth.

2. In, a machine for the manufacture of glass articles and of the typecomprising a parison mould and a knife carried by, a r0 tatable. shaft,for cuttingoff trailing glass from the bottom of the saidparison mould:means for adjustingthe knife shaft vertically. including a screwthreaded portion onthe shaft, anut, screwing on tothesaid portion 1:;

and adapted to abut against a relatively fixed portion in connectionwith the framework, means fixed to said framework and having engagementwith saidnut for maintaining the nut againstmovement away from thesurface against which it ahutsbut permitting rotationqof the nutrelative to the frame. the threaded portion of the shaft extendingvertically above the nut, a member slidahlewith respect to butconstrainedto rotate withthe tatableshaft, for cutting off trailingglass, 1-3

from the bottom of the said parison mould, 7.

and adapted to abut against a relatively fixed portion in connectionwith the framework, the screw threaded portion of the shaft extendingvertically above the nut, means allowing of the rotation of the nut.whilst preventing its movement away from the surface against which itabuts, a saddle piece associated bya feather and feather way with thesaid shaft and normally contacting by its weight only with the nut, andinter-engaging means between the said saddle piece and the said nut forpreventing their relative rotation, thus preventing the nut rotating onthe shaft after adjustment, for the purposes set forth. I

4. In a machine for the manufacture of glass articles and of the typecomprising a parison mould and a knife carried by a retatable shaft, forcutting off trailing from the bottom of the said parison mould;

. means for adj u-sting the knife and shaft vertically including ascrewthreaded portion on the shaft, a nut screwing on to the said'portion andadapted to abut against a relatively fixed portion in connection withthe said framework, the screw threaded portion of the shaft extendingvertically above the nut, the said nut being provided with aplurality'of angularly spaced notches around its outer periphery, meansallowing of the rotation of the nut whilst preventing its movement awayfrom the surface against which it abuts, a member slidable with respectto but constrained to rotatewith the said shaft and normally contactingby its weight only with the nut, and a pivoted detent on the memberadapted to engage with any one of the angularly disposed notches on thenut for preventin the relative rotation of the said member and the nut,thus preventing the nut rotating on the shaft after adjustment, all forthe purposes set forth.

5. In a machine for the manufacture of glass articles and of the typecomprising a parison mould and a knife carried by a rotatable shaft, forcutting oif trailing glass from the bottom of the said parison mould;means for adjusting the knife shaft vertically including a screwthreaded portion on the shaft, a nut screwing on to the said portion andadapted to abut against a relatively fixed portion in connection withthe said framework, the screw threaded portion of the shaft extendingvertically above the nut, the said nut being provided with a pluralityof angularly spaced notches around its outer surface, means allowing ofthe rotation of the nut whilst preventing its movement away from thesurface against which it abuts, a saddle piece associated by a featherand feather way with the shaft, so that it is slidable with respect tosaid shaft and normally contacting. by its weight only with the nut, anda pivoted detent on the saddle piece, such detent being adapted toengage with any one of the angularly disposed notches on the nut, forpre-v venting the relative rotation of the said saddle piece and thesaid nut, thus preventing the nutrotating 0n the shaft after adjustment,substantially as described. 6,111 a machine for the manufacture of glassarticles and of the'type comprising a tatable shaft, for cutting offtrailing glass from the bottom of the said parison mould; means foradjusting the knife shaft vertical ly-including a screw threadedportionon the shaft, a nut screwing on to the said portion and adaptedto abut against a relatively fixed portion in connection with the saidframework, the screw threaded portion of the shaft extending verticallyabove the nut, the said nut being provided with a plurality of angularly spaced notches around its outer surface, means allowing of therotation of the nut whilst preventing its movement away from butconstrained torotate with the I parison mould and a knife carried by arothe surface against which it abuts, a'member I a pivoted detent on themember adapted to engage with any one of the angularly disposed notcheson the nut, the said member being provided with axportion adapted tocontact with the nut leaving the detent free to be turned into and outof engagement with any desired notch and adjustment to be easily asdescribed.

7. In a machine for the manufacture of glass articles and of thetypecomprisinga parison mould and 'a knife carried by a r0- tatable shaft,for cutting ofi' trailing glass from the "bottom of the said parisonmould; means for'adjusting the knife shaft vertically including a screwthreaded portion on the shaft, a nut screwing on to the said portion andadapted to abut against a relatively fixed portion in connection withthe said framework, the screw threaded portion of the shaft extendingvertically above the nut, the said nut being provided with a pluralityof angu larly spaced notchesaround its outer surface and with acircumferential recess uponits uppersurfacefextending to the bore, meansallowing ofthe rotation of the nut whilst preventing its movement awayfrom the surface against which it abuts, a saddle piece associated byafeather and feather way with the shaft, so that it is slidable withrespect to but constrained to rotate with the said shaft and normallycontacting by its weight only with the nut, the lower portion of thesaid saddle piece being adapted to enter the before mentionedcircumferential groove at 4 means the top of thenut, and apivoted detenton the saddle piece, such detent being adapted to en age with anyoneofthe angul'arly dispos'ef notches on the nut for preventing therelative rotation of the said saddle piece and the said nut thuspreventing the nut rotating on the shaft after adjustment, allsubstantially as and for the purposes set forth. a.

8. In a machine for the manufacture of 10 glass articles, a supportingframe, a vertical shaft journaled in said frame and projecting above andbelow the'same, the upper pro- 'ecting end of the shaft being threaded,a ife fixed to the lower end of the shaft, 315 and means for adjustingthe shaft vertically and for retaining the same in an adjusted positioncomprising a nut threaded onto the upper projecting end of the shaft andresting on thesupporting frame, the screw threaded portion of the shaftextending vertically above the nut, means conecting the frame and thenut for preventing upward movement of the latter relative to the frameand for permitting' rotation of the nut relative to the '3 shaft and tothe frame, and means carried by the shaft and engageable by its weightonly with the nut to lock the latter against rotation in any verticallyadjusted position of the'shaft. i1!) 9. In a machine for the manufactureof glass articles, a supporting frame, a vertical shaft journaled insaid frame and projecting above and below the same, the upper projectingend of the shaft being'threaded, a knife fixed to the lower end of theshaft, and means for adjusting the shaft vertically and for retainingthe same in an adjusted position comprising a nut threaded onto theupper projecting end of the shaft and resting on the supporting frame,the screw threaded portion of the shaft extending vertically above the"nut means connecting the frame and the nut for preventing upwardmovement of the latter relative to the frame and for permitting rotationof the nut relative to the shaft and to the frame, a sleeve mounted onthe shaft above the nut and connected to the shaft for relative slidingmovements but retained against relative rotary movements t and normallycontacting by its weight only with the nut, and means carried by thesleeve and engageable with the nut to lock the'latter against rotationin any vertically adjusted position of the shaft.

In witness whereof I affix my signature. SYDNEY HUNT.

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